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Published byAmanda Mosley Modified over 8 years ago
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Continuous and Discontinuous Variation
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What is variation? Differences between living things of the same species is called variation. Your classmates may have different – Eye colour – Hair colour. – Some will be boys and some will be girls. – Some will be tall – Some will be shorter.
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Species Individuals of the same species can reproduce Two individuals belonging to different species cannot normally reproduce together. If they do, their offspring is usually infertile and unable to reproduce.
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. For example, when a lion and a tiger reproduce….
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For example animals called ligers are produced when a male lion and a female tiger reproduce. But a liger cannot have offspring. This means that lions and tigers are different species.
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Continuous variation Continuous variation is something that has a range of values e.g. height of a population. Height ranges from that of the shortest person in the world to that of the tallest person. Any height is possible between these values. Other examples are: weight foot length.
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If you record the heights of a group of people and draw a graph of your results, it usually looks something like this:
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Discontinuous variation A characteristic which has only a limited number of possible values. Here are some examples: gender (male or female) blood group (A, B, AB or O) eye colour.
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Your task! Write own your height on a post it note and place this on the white board to produce a graph (as previously shown) Write down your eye colour on a second post it and place this into the correct category on a second graph on the white board Draw your graphs in your books and explain if they show continuous or discontinuous data
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